Duke Energy Florida Solar 2026: The $30 Minimum Bill

A Duke Energy Florida solar home still pays at least $30 a month. That is Duke's minimum bill: a $12.45 customer charge plus an adjustment of up to $17.55, charged even when your panels cover every kilowatt-hour you use. And the bill it applies to just shrank — Duke cut a typical 1,000-kWh residential bill by about $50 a month, or 25%, between January and June 2026. A quote built on January 2026 Duke rates is quoting a bill that no longer exists, and it overstates your savings in a way that looks entirely legitimate on the page.

Duke's minimum-bill page was not reachable directly when this was written. The quotations below come from an archived capture dated February 4, 2026, and from Duke news releases; the pages may have changed since. Confirm anything you are about to act on with Duke.

This is a guide to what changed on a Duke Energy Florida bill in 2026, what the $30 minimum bill does to a solar home, and the minimum-bill footnote that income-qualified customers should ask about before they interconnect. For how the crediting itself works — the credit rollover, the year-end settlement, how Duke compares to FPL and TECO — read Florida net metering by utility.

Does Duke Energy Florida charge a minimum bill?

Yes — $30 a month, and it is the number that decides what a solar home actually pays. Duke's own words: "Duke Energy Florida (DEF) will continue charging a minimum usage fee of $30 per month."

The mechanics are published plainly and most solar proposals ignore them. The fixed Customer Charge is $12.45. Duke: "If you are paying the $12.45 Customer Charge and have a net zero usage in the billing cycle, the maximum adjustment will be approximately $17.55. These two bill components will add up to a $30 minimum bill."

That is Duke describing, in its own words, exactly what happens to a solar customer who nets out to zero. It is your floor in your best months.

One nuance worth knowing: the minimum is charged per meter. Duke's page addresses combining separately metered facilities — a boat slip, a well pump — and notes that customers who disconnect service entirely are not affected. If you have a second meter doing very little, ask Duke about it.

How many customers actually pay the minimum bill?

Duke says about 5%: "Ninety-five percent of Florida accounts will not be affected by a minimum bill adjustment, as their combination of energy usage and fixed customer charges reach the amount needed to cover costs... approximately 5% could see monthly adjustments of up to $17.55."

Duke does not say who the 5% is, and it is not all solar homes — Duke's FAQ names seasonal residents who leave the power on over the summer. But the arithmetic is not ambiguous for a net-zero month. If you are going solar on Duke, expect to hit the adjustment in your strongest production months: exactly the months where a proposal shows a near-zero bill.

Is Duke's minimum bill aimed at solar customers?

Duke says no, and the answer is worth quoting at length because it is more candid than most utility copy: "The minimum bill does not target any customer segments. All properties on a non-demand billed rate are subject to the minimum, as each of those properties has equal reliance on the energy grid. Although renewable generation customers are producing energy, they remain dependent upon the grid to receive and distribute the excess solar energy they produce and get credited for or to draw electricity when solar panels are not producing enough energy to meet their needs."

That is a defensible position, and it does not change the arithmetic: a charge that only bites at very low usage will be paid disproportionately by the customers who engineered their usage down to nothing. Budget for the $30. Florida's interconnection rule points the same way — it requires that a net metering customer "shall continue to pay the applicable customer charge and applicable demand charge" regardless of how much energy they export.

Do income-qualified customers lose their Duke minimum bill credit by going solar?

Possibly — and Duke's page does not say clearly. This is worth getting in writing before you sign anything.

Duke offers a minimum bill modification for income-qualified customers in 2025, 2026 and 2027 — a credit that effectively refunds the minimum-bill adjustment, worth up to $17.55 a month. Eligibility runs through Supplemental Security Income, Medicaid, Temporary Assistance for Needy Families, SNAP-EBT, the Low Income Home Energy Assistance Program, or Duke Energy Neighborhood Energy Saver.

Here is the condition, verbatim: "If an income-qualified customer who is not also a net metering customer contacts DEF and indicates receipt of a bill increased by the minimum bill, DEF shall manually provide a credit on a future bill."

Read that carefully — and note what it does not say. The net-metering carve-out sits on one bullet: the path where a customer contacts Duke to report a minimum-bill charge. The very next bullet, describing the credit Duke applies proactively to accounts it already tracks, carries no such qualifier, and neither does the eligibility list. So the page is genuinely ambiguous. It may mean net-metered customers cannot self-report for the credit, or it may mean they do not get it at all. Duke does not resolve it, and I am not going to guess.

If you are on one of those programs and someone is pitching you rooftop solar, get this answered by Duke in writing before you sign: does my income-qualified minimum bill modification survive interconnection? It is a real dollar amount — up to $17.55 a month — and it should not be settled by a salesperson's assumption.

Solar can still be the right call. But if that credit does not survive, the projected savings need to clear the gap before you sign. If they do not, community solar keeps you off the net-metering tariff entirely.

Why did Duke Energy Florida bills go down in 2026?

Three separate reductions took about $50 a month off a typical 1,000-kWh Duke bill during 2026: roughly $33 in February when the storm cost recovery charge came off early, $11 in March under Duke's annual seasonal reduction, and $6 in June from a storm-cost true-up. Measured against January 2026:

One caveat on the headline number: the 25% is measured against January, and January was itself an inflated baseline — Duke had said bills would rise about $7.54 against December 2025 before any of this. The $11 seasonal reduction also comes back off in December. So "2026 was 25% cheaper" is not quite right; "June through September ran about 25% below January" is.

The June reduction is the one that expires. Duke over-collected on the 2024 hurricane season: the Florida Public Service Commission approved a true-up between the storm cost recovery charge collected (approximately $1 billion) and the amount actually incurred (approximately $915 million), flowing back as lower fuel rates "from June through September 2026."

That window has closed. Duke has not published an October figure, so treat this as an expectation rather than a number: the June decrease was a net $6 — the storm-cost refund partly offset by new solar-site recovery costs. The refund ends after September; the solar recovery cost does not. So an October bill for 1,000 kWh should be at least about $6 higher than September's, possibly more, for reasons that have nothing to do with usage. Confirm the October rate with Duke.

Does Duke Energy Florida pay you for extra solar power?

During the year, yes — but as credits, not cash. Duke's statement: "Duke Energy provides a full credit for every kWh supplied by customers with solar panels, and we compensate those customers for any surplus they deliver to the grid at the conclusion of each year."

That is kilowatt-hour-for-kilowatt-hour netting of energy during the year, with a settlement at the end of it — the standard arrangement for a Florida investor-owned utility under Florida Public Service Commission Rule 25-6.065. Credits roll forward for up to twelve months, and fixed charges keep running underneath. Whatever is left at year end is settled at Duke's COG-1 rate.

COG-1 is Duke's as-available energy tariff — an avoided-cost rate, meaning roughly what it would have cost Duke to generate that power itself, with no delivery or fixed costs in it. Duke does not publish it alongside its residential rates, so ask for the current figure before you let anyone model an annual payout. The practical rule holds either way: banked kilowatt-hours you never use back are settled at a wholesale rate, not at what you would have paid for them. Oversizing to "sell power back" is a discount you give the utility. How that crediting works, utility by utility, is a separate piece.

How big can my system be on Duke Energy Florida?

Up to 10 kW AC — about 11.7 kW DC — before you cross into Tier 2 and owe liability insurance. Duke is an investor-owned utility, so Florida Public Service Commission Rule 25-6.065 sets the tiers, and the tier is decided by the AC rating, not the DC number on your proposal: "For inverter-based systems, the AC nameplate generating capacity shall be calculated by multiplying the total installed DC nameplate generating capacity by .85 in order to account for losses during the conversion from DC to AC."

The rule bars Duke from charging Tier 1 customers any fee that other customers without self-generation do not pay, including application fees; from requiring liability insurance; and — for inverter-based systems — from making you pay for a manual disconnect switch. Note that the $1 million and $2 million figures are ceilings on what a utility may demand, not floors, though Florida utilities generally set them at the ceiling.

There is a second cap in the same rule that proposals rarely mention: the system's gross power rating must not "exceed 90% of the customer's utility distribution service rating." On a 200-amp service that is a real constraint on a large array. Ask your installer for the AC number, ask which side of 10 kW your design falls on, and ask them to show the service-rating calculation. Crossing into Tier 2 means proving $1 million of liability insurance, which most Florida homeowners policies do not carry by default.

Duke's Tier 2 and Tier 3 application fees are not published anywhere I could reach. Confirm the fee with Duke directly; do not take the number off a proposal.

Does Duke Energy Florida offer a solar rebate?

I could not find one. The rebate programs Duke names in its 2026 rate release are energy-efficiency measures under "Home Improvement Rebate Programs" — insulation, heat pumps, that kind of thing — not solar or battery. Duke's site was partly unreachable when this was written, so confirm with Duke before assuming there is none. If a salesperson mentions a Duke solar rebate, ask to see the page.

Florida's real, reliable incentives are statewide and do not depend on your utility: the sales-tax exemption on solar equipment and the property-tax exemption on the added home value, covered in Florida solar incentives 2026. Duke also passes through $65 million in Inflation Reduction Act tax credits, which it says saves residential customers at least $2.50 per 1,000 kWh — a rate reduction rather than a rebate, and one you get whether or not you go solar.

Is there still a 30% federal solar tax credit in Duke territory?

On a cash or loan purchase in 2026, no. The residential clean energy credit under section 25D terminated for expenditures made after December 31, 2025 — and the expenditure counts when the installation was completed, so a 2025 deposit on a 2026 install does not qualify. Any quote showing a 30% federal credit on a purchase is overstating your savings by thousands, and you are the one who signs the tax return.

Leases and power purchase agreements are different: the finance company owns the system, so the section 48E commercial credit belongs to them, not you — and only if their project qualifies. After the July 2025 law, 48E carries foreign-entity sourcing restrictions and a placed-in-service deadline that not every installer will clear. Ask, in writing, whether the owner is actually claiming 48E on your system and whether that value shows up in your monthly payment. Then compare the 25-year total rather than the first-year one: lease vs. loan vs. cash and what a small annual escalator does over 25 years.

How do I check a Duke Energy solar quote?

Six checks, and the first is specific to Duke: because rates fell about 25% between January and June 2026, the most common error in a Duke-territory proposal is a stale starting bill.

1. Which month's bill is the proposal using? A January 2026 statement is roughly $50 a month too high for a 1,000-kWh home. A February statement is roughly $17 too high. A March-to-May statement, about $6.
2. Does any projected month show a bill under $30? If so, the model does not know about Duke's minimum bill. Ask for a re-run.
3. What escalation rate is assumed? Anything above roughly 3–4% a year is an assumption I would want justified from your own utility's history, not a national average — and Duke's residential rates went down about 25% against January 2026.
4. What is the AC rating? DC × 0.85. Over 10 kW AC puts you in Tier 2 with an insurance requirement.
5. Is a 30% federal credit in the savings math on a cash or loan deal? If yes, the proposal is wrong.
6. Are you on an income-qualified program? Ask Duke whether the minimum bill modification survives interconnection before you commit.
7. Who files the interconnection application — the utility approval that lets you connect — and who pays if permission to operate (PTO) runs late?
8. Have you read the cancellation window? Florida gives you specific rescission rights: Florida's solar contract disclosure law.

Every one of these numbers has a specific place it hides on a proposal — how to read a solar proposal line by line shows where.

Will my Duke bill go up in October 2026?

Expect it to. The June 2026 reduction of about $6 per 1,000 kWh was a storm-cost true-up Duke set to run only through September 2026. Your usage will not have changed; the refund will simply have stopped. Because that $6 was a net figure — the refund offset by new solar-site recovery costs that continue — the October increase could be larger. Duke has not published an October rate; ask them.

Can I get a $0 Duke Energy bill with solar?

No. Duke charges every standard residential account a $30 minimum, solar or not, and says the minimum applies to net metering customers too. A well-sized system takes your bill down to that $30 floor in your best months — never to zero. Florida's interconnection rule also requires that customer and demand charges keep applying regardless of what you export.

What did Duke Energy Florida bills do in 2026?

They fell about $50 a month, or roughly 25%, for a residential customer using 1,000 kWh, measured against January 2026. It came in three steps: about $33 in February when the storm cost recovery charge was removed early, $11 in March under a seasonal reduction, and $6 in June from a storm-cost true-up that ended after September.

Sources

• Duke Energy Florida, "Understanding the Minimum Bill" (archived capture, February 4, 2026) — the $30 minimum usage fee, the $12.45 Customer Charge, the approximately $17.55 maximum adjustment, the 95%/5% split, the income-qualified modification and its net-metering wording, the per-meter treatment, and Duke's statement on solar credits.
• Duke Energy news release, May 29, 2026 — the three 2026 rate reductions, the approximately $50 (25%) total against January, the storm cost true-up ($1 billion collected against approximately $915 million incurred) effective June through September 2026, and the Inflation Reduction Act pass-through.
• Duke Energy news release, September 4, 2025 — 2026 bill changes, the January increase against December 2025, and the rebate programs offered.
• Florida Public Service Commission Rule 25-6.065, Interconnection and Net Metering of Customer-Owned Renewable Generation — tiers, the AC = DC × 0.85 rating, the 90%-of-service-rating cap, the Tier 1 fee and insurance exemptions, the insurance ceilings, credit rollover, the twelve-month limit, the continuing customer and demand charges, and the annual COG-1 settlement.
• Public Law 119-21, §70506 (termination of the section 25D residential clean energy credit) and §70513 (section 48E).

Rates and programs change, and Duke's own pages were partly unreachable when this was written. Confirm current figures directly with Duke before deciding, and confirm tax treatment with your own tax adviser — this is not legal or tax advice.

Get a second opinion on your Duke Energy quote

I am an independent solar broker. I do not install anything, so I have no system to sell you and no reason to inflate your utility rate — which matters more than usual in Duke territory this year, where the rate genuinely fell. You never pay me anything; if you go forward with an installer I introduce you to, that installer may pay me a referral fee, and the review is the same either way.

If you are in St. Petersburg, Clearwater, Ocala or elsewhere in Duke's Central Florida service area and you are holding a quote, this is the check worth ten minutes. Get a free quote review, or see what solar actually costs in Central Florida.